Method for preparing hydrothermal biomass charcoal from pecan shells

A technology of biomass charcoal and hickory shell, which is applied in the direction of chemical instruments and methods, adsorption water/sewage treatment, other chemical processes, etc., to achieve the effect of increasing added value and good adsorption performance

Inactive Publication Date: 2015-10-28
ZHEJIANG FORESTRY UNIVERSITY
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  • Method for preparing hydrothermal biomass charcoal from pecan shells
  • Method for preparing hydrothermal biomass charcoal from pecan shells
  • Method for preparing hydrothermal biomass charcoal from pecan shells

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Example Embodiment

[0018] Embodiment 1 (corresponding to embodiment 1 and weight portion proportioning value in the above table), prepare as follows as follows:

[0019] (1) pulverize the pecan shell into 60-80 mesh pecan shell powder;

[0020] (2) preparation of hydrothermal biomass charcoal: 100 parts by weight of 60-80 mesh pecan shell powder and 10 parts by weight of 37% concentrated hydrochloric acid are placed in 200 parts by weight of water, stirred and mixed at room temperature and then placed in In a stainless steel reaction kettle with a polytetrafluoroethylene lining, react at 220 ° C for 8 hours, naturally cool, filter with suction, and wash to neutrality to obtain hydrothermal biomass charcoal;

[0021] (3) Preparation of activated hydrothermal biomass charcoal: the hydrothermal biomass charcoal obtained in step (2) is mixed with 5 parts by weight of inorganic alkali and 220 parts by weight of water, after stirring at room temperature for 2h, suction filtration, washing to neutralit...

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Abstract

The invention discloses a method for preparing hydrothermal biomass charcoal from pecan shells. The method includes the steps that the pecan shells are smashed into 60-80-mesh pecan shell powder, a hydrothermal reaction is conducted on the pecan shell powder under the strong acid condition, and the hydrothermal biomass charcoal is prepared; the obtained hydrothermal biomass charcoal is activated through inorganic base, and an activated hydrothermal biomass charcoal adsorption material is obtained. The method is simple in technology, low in raw material cost and large in adsorption amount. The prepared adsorption material can be applied to adsorption treatment of cationic dye, and a good treating effect is achieved. According to the method, pecan shell resources are recycled, a low-cost and efficient novel adsorbing agent is obtained, and the development of the environment-friendly event is promoted.

Description

technical field [0001] The invention belongs to the field of preparation of biomass carbon adsorption materials and environmental pollution control, and in particular relates to a production method of hydrothermally carbonizing hickory nut shells as the main material to prepare biomass adsorption materials. Material charcoal preparation method. Background technique [0002] The distribution range of hickory in the whole country is small, mainly distributed in the mountainous areas of northwest Zhejiang and southeastern Anhui, and 70% of them are distributed in Lin'an City, Zhejiang Province. According to preliminary statistics, the annual output of hickory nuts in Lin'an City is about 15,000-30,000 tons, and a large amount of hickory nut shells are produced. At present, there is no better treatment method except incineration. Therefore, there is an urgent need to develop clean and efficient hickory shell resource utilization technology. The hickory shell is used to prepar...

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Application Information

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IPC IPC(8): B01J20/20B01J20/30C02F1/28
Inventor 李兵傅深渊郭建忠林国杭
Owner ZHEJIANG FORESTRY UNIVERSITY
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